Texas Instruments LM1117SX-3.3/NOPB
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.62 | $1.62 |
| 15+ | $1.57 | $23.55 |
| 25+ | $1.54 | $38.50 |
| 50+ | $1.45 | $72.50 |
| 100+ | $1.28 | $128.00 |
| N+ | $0.26 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | LM1117-3.3 |
| Packaging | Cut Tape (CT) | Tape & Reel (TR) |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 15V |
| Voltage - Output (Min/Fixed) | 3.3V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 1.2V @ 800mA |
| Current - Output | 800mA |
| Current - Quiescent (Iq) | 5 mA |
| Current - Supply (Max) | 10 mA |
| PSRR | 75dB (120Hz) |
| Control Features | - |
| Protection Features | Over Current, Over Temperature |
| Operating Temperature | 0°C ~ 125°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | TO-263-4, D2PAK (3 Leads + Tab), TO-263AA |
| Supplier Device Package | TO-263 (DDPAK-3) |
| ROHS |  |
The LM1117SX-3.3/NOPB from Texas Instruments is a fixed 3.3V LDO regulator capable of 800mA output. Housed in a TO-263 (DDPAK-3) package, it offers excellent thermal performance for higher power applications. With a dropout voltage of 1.2V at full load and a quiescent current of 5 mA, it provides a reliable, low-noise 3.3V rail. The 75dB PSRR at 120Hz ensures effective ripple rejection.
- High Output Current: 800mA supports multiple digital loads simultaneously.
- Thermally Efficient Package: TO-263 allows heatsink attachment for high-power designs.
- Proven Reliability: TI's LM1117 series is industry-standard with wide availability.
- Good Ripple Rejection: 75dB at 120Hz for clean digital power.
FPGA and DSP Core Supplies
The 800mA output and 3.3V rail are ideal for powering FPGA core logic or DSP I/O banks, with the TO-263 package handling thermal dissipation.
Networking Equipment
In routers and switches, this LDO provides a stable 3.3V for PHY transceivers and switch ICs, with 75dB PSRR rejecting board-level noise.
Industrial Automation
PLC modules requiring 3.3V logic supply benefit from the high current and robust TO-263 package for 24/7 operation.
Consumer Set-Top Boxes
Provides clean 3.3V for SoC and memory, with the DDPAK package allowing heatsink attachment for higher power dissipation.
Automotive Infotainment
With 1.2V dropout, it can regulate from a 5V rail, making it suitable for head units and display modules.
Power Supply Post-Regulation
Used after a DC-DC converter to reduce ripple to 3.3V for sensitive analog measurement circuits.
- Q: What is the output voltage?
- A: The LM1117SX-3.3/NOPB provides a fixed 3.3V output.
- Q: What is the maximum output current?
- A: It can deliver up to 800mA.
- Q: What is the input voltage range?
- A: Input voltage is 3.3V (typical); refer to datasheet for full range.
- Q: What is the dropout voltage?
- A: Dropout is 1.2V at 800mA load.
- Q: What is the quiescent current?
- A: Quiescent current is 5 mA.
- Q: What package is available?
- A: It comes in TO-263 (DDPAK-3).
LM1117SX-3.3/NOPB.pdf
- Q: What is the output voltage?
- A: The LM1117SX-3.3/NOPB provides a fixed 3.3V output.
- Q: What is the maximum output current?
- A: It can deliver up to 800mA.
- Q: What is the input voltage range?
- A: Input voltage is 3.3V (typical); refer to datasheet for full range.
- Q: What is the dropout voltage?
- A: Dropout is 1.2V at 800mA load.
- Q: What is the quiescent current?
- A: Quiescent current is 5 mA.
- Q: What package is available?
- A: It comes in TO-263 (DDPAK-3).
